package com.lrm.blog.web.admin;

import com.lrm.blog.po.Type;
import com.lrm.blog.service.TypeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.validation.Valid;

@Controller
@RequestMapping("/admin")
public class TypeController {

    @Autowired
    private TypeService typeService;

    @GetMapping("/types")
    public String types(@PageableDefault(size = 5,sort={"id"},direction = Sort.Direction.DESC)
                                    Pageable pageable, Model model){

        model.addAttribute("page",typeService.listType(pageable));
        typeService.listType(pageable);
        return  "admin/types";
    }


    @GetMapping("/types/input")
    public String input(Model model){
        model.addAttribute("type",new Type());
        return "admin/types-input";
    }

    //编辑
    @GetMapping("/types/{id}/input")
    public String editInput(@PathVariable Long id, Model model){

        model.addAttribute("type",typeService.getType(id));
        return "admin/types-input";
    }

    //重复校验
    @PostMapping("/types")
    public String post(@Valid Type type, BindingResult result, RedirectAttributes attributes){

            Type type1=typeService.getTypeByName(type.getName());
        if (type1!=null){
            result.rejectValue("name","nameError","重复添加分类");
        }

        if (result.hasErrors()){
             return "admin/types-input";
         }

        Type t=typeService.saveType(type);
        if (t==null){

            attributes.addFlashAttribute("message","操作失败");
        }
        else {
            attributes.addFlashAttribute("message","操作成功");
        }
        return "redirect:/admin/types";
    }

    //编辑重复校验
    @PostMapping("/types/{id}")
    public String editPost(@Valid Type type, BindingResult result,
                           @PathVariable Long id, RedirectAttributes attributes){

        Type type1=typeService.getTypeByName(type.getName());
        if (type1!=null){
            result.rejectValue("name","nameError","重复添加分类");
        }

        if (result.hasErrors()){
            return "admin/types-input";
        }

        Type t=typeService.updateType(id,type);
        if (t==null){

            attributes.addFlashAttribute("message","更新失败");
        }
        else {
            attributes.addFlashAttribute("message","更新成功");
        }
        return "redirect:/admin/types";
    }

    @GetMapping("/types/{id}/delete")
    private String delete(@PathVariable Long id,RedirectAttributes attributes){
       typeService.deleteType(id);
        attributes.addFlashAttribute("message","删除成功");
       return "redirect:/admin/types";
    }
}
